50 MR. C. V. A. PEEL AND OTHERS ON [JaU. 23, 



Ehipicephalus mabmoeeus, sp. n. (Plate III. figs. 1-1 d.) 



(S . Colour. Capituluin yellowish brown ; dorsal surface of body 

 yellowish white, with five large deep i-ed-brown patches, one ou 

 each side extending backwards from the cervical groove, one on 

 each side longitudinal and sending off' towards the middle line a 

 broad transverse bar, and a large posterior median patch with 

 convex hinder border and anterior border produced forwards in the 

 middle line, also a narrow brown band running round the margin 

 of the dorsal scute ; legs yellowish brown, with a broad longi- 

 tudinal white band on the upperside of the femora, patellae, and 

 tibiae ; ventral surface of body whitish, with chitinous sclerites 

 deep brown like the legs- 

 Posterior border of capituhim evenly concave, the angles 

 moderately produced ; lateral margins moderately, not strongly 

 diverging, the anterior border only a little wider than the posterior. 

 Dorsal plate almost entirely covering the sides of the body, 

 leaving merely a narrow marginal membranous rim ; cervical 

 grooves distinct, short ; marginal groove represented by a series 

 of coarse punctures ; three posterior punctured grooves on the 

 posterior dark patch ; for the rest the dorsal plate is without 

 grooves but is pitted with coarse scattered punctures ; the posterior 

 rim divided by short sulci into eleven festoons. Ventral area with 

 a single long piriform adanal plate, which is narrowed in front 

 and extends backwards almost to the posterior coxae ; its external 

 border slightly convex, internal border concave in the middle, 

 convex in the anterior and posterior third, posterior border oblique 

 and ending internally in a rounded rectangular prominence ; a 

 single small median sclerite on the postanal membranous area. 

 Coicce of anterior legs produced into two strong spiniform pro- 

 cesses ; of 2nd to 4th with a single distal spiniform process on the 

 posterior side.' 



Total length of dorsal plate 3-8 mm. 



Loc. Bularli in West Somaliland (May 1895). 



A single specimen ( iS type) in British Museum. 



Ehipicephalus armatus, sp. n. (Plate III. figs. 2-2/.) 

 d' . Colour a tolerably uniform deep brown, with black markings 

 on the grooves of the dorsal plate ; legs deep brown ; ventral area 

 pale. 



Capitulum with posterior border straight in the middle, its 

 angles more abruptly spiniform than in R. marmoreus, its lateral 

 margins more obliquely diverging in their posterior two-thirds, 

 then abruptly converging. Dorsal smte not quite covering the 

 lateral area, with normal cervical grooves ; marginal groove deep, 

 strongly pitted, extending from a point on a level with the cervical 

 groove to the beginning of the festoons of the posterior border ; 

 posteriorly there is a pair of deep pitted grooves, and between 



' Owing to the dried state of the specimen, satisfactory examination of the 

 mandibular armature was impossible. 



[48J 



